[binutils.git] / gdb / std-operator.def

/* Standard language operator definitions for GDB, the GNU debugger.

   Copyright (C) 1986, 1989, 1992, 1994, 2000, 2003, 2005, 2007-2012
   Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

/* Used when it's necessary to pass an opcode which will be ignored,
   or to catch uninitialized values.  */
OP (OP_NULL)

/* BINOP_... operate on two values computed by following subexpressions,
replacing them by one result value.  They take no immediate arguments.  */

OP (BINOP_ADD)			/* + */
OP (BINOP_SUB)			/* - */
OP (BINOP_MUL)			/* * */
OP (BINOP_DIV)			/* / */
OP (BINOP_REM)			/* % */
OP (BINOP_MOD)			/* mod (Knuth 1.2.4) */
OP (BINOP_LSH)			/* << */
OP (BINOP_RSH)			/* >> */
OP (BINOP_LOGICAL_AND)		/* && */
OP (BINOP_LOGICAL_OR)		/* || */
OP (BINOP_BITWISE_AND)		/* & */
OP (BINOP_BITWISE_IOR)		/* | */
OP (BINOP_BITWISE_XOR)		/* ^ */
OP (BINOP_EQUAL)		/* == */
OP (BINOP_NOTEQUAL)		/* != */
OP (BINOP_LESS)			/* < */
OP (BINOP_GTR)			/* > */
OP (BINOP_LEQ)			/* <= */
OP (BINOP_GEQ)			/* >= */
OP (BINOP_REPEAT)		/* @ */
OP (BINOP_ASSIGN)		/* = */
OP (BINOP_COMMA)		/* , */
OP (BINOP_SUBSCRIPT)		/* x[y] */
OP (BINOP_EXP)			/* Exponentiation */

/* C++.  */

OP (BINOP_MIN)			/* <? */
OP (BINOP_MAX)			/* >? */

/* STRUCTOP_MEMBER is used for pointer-to-member constructs.
   X .  * Y translates into X STRUCTOP_MEMBER Y.  */
OP (STRUCTOP_MEMBER)

/* STRUCTOP_MPTR is used for pointer-to-member constructs
   when X is a pointer instead of an aggregate.  */
OP (STRUCTOP_MPTR)

/* TYPE_INSTANCE is used when the user specifies a specific
   type instantiation for overloaded methods/functions.

   The format is:
   TYPE_INSTANCE num_types type0 ... typeN num_types TYPE_INSTANCE.  */
OP (TYPE_INSTANCE)

/* end of C++.  */

/* For Modula-2 integer division DIV.  */
OP (BINOP_INTDIV)

/* +=, -=, *=, and so on.  The following exp_element is another opcode,
   a BINOP_, saying how to modify.  Then comes another BINOP_ASSIGN_MODIFY,
   making three exp_elements in total.  */
OP (BINOP_ASSIGN_MODIFY)

/* Modula-2 standard (binary) procedures.  */
OP (BINOP_VAL)

/* Concatenate two operands, such as character strings or bitstrings.
   If the first operand is a integer expression, then it means concatenate
   the second operand with itself that many times.  */
OP (BINOP_CONCAT)

/* For (the deleted) Chill and Pascal.  */
OP (BINOP_IN)			/* Returns 1 iff ARG1 IN ARG2.  */

/* This is the "colon operator" used various places in (the
   deleted) Chill.  */
OP (BINOP_RANGE)

/* This must be the highest BINOP_ value, for expprint.c.  */
OP (BINOP_END)

/* Operates on three values computed by following subexpressions.  */
OP (TERNOP_COND)		/* ?: */

/* A sub-string/sub-array.  (the deleted) Chill syntax:
   OP1(OP2:OP3).  Return elements OP2 through OP3 of OP1.  */
OP (TERNOP_SLICE)

/* Multidimensional subscript operator, such as Modula-2 x[a,b,...].
   The dimensionality is encoded in the operator, like the number of
   function arguments in OP_FUNCALL, I.E. <OP><dimension><OP>.
   The value of the first following subexpression is subscripted
   by each of the next following subexpressions, one per dimension.  */
OP (MULTI_SUBSCRIPT)

/* The OP_... series take immediate following arguments.
   After the arguments come another OP_... (the same one)
   so that the grouping can be recognized from the end.  */

/* OP_LONG is followed by a type pointer in the next exp_element
   and the long constant value in the following exp_element.
   Then comes another OP_LONG.
   Thus, the operation occupies four exp_elements.  */
OP (OP_LONG)

/* OP_DOUBLE is similar but takes a DOUBLEST constant instead of a
   long.  */
OP (OP_DOUBLE)

/* OP_VAR_VALUE takes one struct block * in the following element,
   and one struct symbol * in the following exp_element, followed
   by another OP_VAR_VALUE, making four exp_elements.  If the
   block is non-NULL, evaluate the symbol relative to the
   innermost frame executing in that block; if the block is NULL
   use the selected frame.  */
OP (OP_VAR_VALUE)

/* OP_VAR_ENTRY_VALUE takes one struct symbol * in the following element,
   followed by another OP_VAR_ENTRY_VALUE, making three exp_elements.
   somename@entry may mean parameter value as present at the entry of the
   current function.  Implemented via DW_OP_GNU_entry_value.  */
OP (OP_VAR_ENTRY_VALUE)

/* OP_LAST is followed by an integer in the next exp_element.
   The integer is zero for the last value printed,
   or it is the absolute number of a history element.
   With another OP_LAST at the end, this makes three exp_elements.  */
OP (OP_LAST)

/* OP_REGISTER is followed by a string in the next exp_element.
   This is the name of a register to fetch.  */
OP (OP_REGISTER)

/* OP_INTERNALVAR is followed by an internalvar ptr in the next
   exp_element.  With another OP_INTERNALVAR at the end, this
   makes three exp_elements.  */
OP (OP_INTERNALVAR)

/* OP_FUNCALL is followed by an integer in the next exp_element.
   The integer is the number of args to the function call.
   That many plus one values from following subexpressions
   are used, the first one being the function.
   The integer is followed by a repeat of OP_FUNCALL,
   making three exp_elements.  */
OP (OP_FUNCALL)

/* OP_OBJC_MSGCALL is followed by a string in the next exp_element
   and then an integer.  The string is the selector string.  The
   integer is the number of arguments to the message call.  That
   many plus one values are used, the first one being the object
   pointer.  This is an Objective C message.  */
OP (OP_OBJC_MSGCALL)

/* This is EXACTLY like OP_FUNCALL but is semantically different.
   In F77, array subscript expressions, substring expressions and
   function calls are all exactly the same syntactically.  They
   may only be disambiguated at runtime.  Thus this operator,
   which indicates that we have found something of the form
   <name> ( <stuff> ).  */
OP (OP_F77_UNDETERMINED_ARGLIST)

/* OP_COMPLEX takes a type in the following element, followed by another
   OP_COMPLEX, making three exp_elements.  It is followed by two double
   args, and converts them into a complex number of the given type.  */
OP (OP_COMPLEX)

/* OP_STRING represents a string constant.
   Its format is the same as that of a STRUCTOP, but the string
   data is just made into a string constant when the operation
   is executed.  */
OP (OP_STRING)

/* OP_ARRAY creates an array constant out of the following subexpressions.
   It is followed by two exp_elements, the first containing an integer
   that is the lower bound of the array and the second containing another
   integer that is the upper bound of the array.  The second integer is
   followed by a repeat of OP_ARRAY, making four exp_elements total.
   The bounds are used to compute the number of following subexpressions
   to consume, as well as setting the bounds in the created array constant.
   The type of the elements is taken from the type of the first subexp,
   and they must all match.  */
OP (OP_ARRAY)

/* UNOP_CAST is followed by a type pointer in the next exp_element.
   With another UNOP_CAST at the end, this makes three exp_elements.
   It casts the value of the following subexpression.  */
OP (UNOP_CAST)

/* Like UNOP_CAST, but the type is a subexpression.  */
OP (UNOP_CAST_TYPE)

/* The C++ dynamic_cast operator.  */
OP (UNOP_DYNAMIC_CAST)

/* The C++ reinterpret_cast operator.  */
OP (UNOP_REINTERPRET_CAST)

/* UNOP_MEMVAL is followed by a type pointer in the next exp_element
   With another UNOP_MEMVAL at the end, this makes three exp_elements.
   It casts the contents of the word addressed by the value of the
   following subexpression.  */
OP (UNOP_MEMVAL)

/* UNOP_MEMVAL_TLS is followed by a `struct objfile' pointer in the next
   exp_element and a type pointer in the following exp_element.
   With another UNOP_MEMVAL_TLS at the end, this makes four exp_elements.
   It casts the contents of the word offsetted by the value of the
   following subexpression from the TLS specified by `struct objfile'.  */
OP (UNOP_MEMVAL_TLS)

/* Like UNOP_MEMVAL, but the type is supplied as a subexpression.  */
OP (UNOP_MEMVAL_TYPE)

/* UNOP_... operate on one value from a following subexpression
   and replace it with a result.  They take no immediate arguments.  */

OP (UNOP_NEG)			/* Unary - */
OP (UNOP_LOGICAL_NOT)		/* Unary ! */
OP (UNOP_COMPLEMENT)		/* Unary ~ */
OP (UNOP_IND)			/* Unary * */
OP (UNOP_ADDR)			/* Unary & */
OP (UNOP_PREINCREMENT)		/* ++ before an expression */
OP (UNOP_POSTINCREMENT)		/* ++ after an expression */
OP (UNOP_PREDECREMENT)		/* -- before an expression */
OP (UNOP_POSTDECREMENT)		/* -- after an expression */
OP (UNOP_SIZEOF)		/* Unary sizeof (followed by expression) */

OP (UNOP_PLUS)			/* Unary plus */

OP (UNOP_CAP)			/* Modula-2 standard (unary) procedures */
OP (UNOP_CHR)
OP (UNOP_ORD)
OP (UNOP_ABS)
OP (UNOP_FLOAT)
OP (UNOP_HIGH)
OP (UNOP_MAX)
OP (UNOP_MIN)
OP (UNOP_ODD)
OP (UNOP_TRUNC)

OP (OP_BOOL)			/* Modula-2 builtin BOOLEAN type */
OP (OP_M2_STRING)		/* Modula-2 string constants */

/* STRUCTOP_... operate on a value from a following subexpression
   by extracting a structure component specified by a string
   that appears in the following exp_elements (as many as needed).
   STRUCTOP_STRUCT is used for "." and STRUCTOP_PTR for "->".
   They differ only in the error message given in case the value is
   not suitable or the structure component specified is not found.

   The length of the string follows the opcode, followed by
   BYTES_TO_EXP_ELEM(length) elements containing the data of the
   string, followed by the length again and the opcode again.  */

OP (STRUCTOP_STRUCT)
OP (STRUCTOP_PTR)

/* C++: OP_THIS is just a placeholder for the class instance variable.
   It just comes in a tight (OP_THIS, OP_THIS) pair.  */
OP (OP_THIS)

/* Objective C: "@selector" pseudo-operator.  */
OP (OP_OBJC_SELECTOR)

/* OP_SCOPE surrounds a type name and a field name.  The type
   name is encoded as one element, but the field name stays as
   a string, which, of course, is variable length.  */
OP (OP_SCOPE)

/* OP_TYPE is for parsing types, and used with the "ptype" command
   so we can look up types that are qualified by scope, either with
   the GDB "::" operator, or the Modula-2 '.' operator.  */
OP (OP_TYPE)

/* An un-looked-up identifier.  */
OP (OP_NAME)

/* An Objective C Foundation Class NSString constant.  */
OP (OP_OBJC_NSSTRING)

/* A F90 array range operator (for "exp:exp", "exp:", ":exp" and ":").  */
OP (OP_F90_RANGE)

/* OP_DECFLOAT is followed by a type pointer in the next exp_element
   and a dec long constant value in the following exp_element.
   Then comes another OP_DECFLOAT.  */
OP (OP_DECFLOAT)

/* OP_ADL_FUNC specifies that the function is to be looked up in an
   Argument Dependent manner (Koenig lookup).  */
OP (OP_ADL_FUNC)

/* The typeof operator.  This has one expression argument, which is
   evaluated solely for its type.  */
OP (OP_TYPEOF)

/* The decltype operator.  This has one expression argument, which is
   evaluated solely for its type.  This is similar to typeof, but has
   slight different semantics.  */
OP (OP_DECLTYPE)
Commit	Line	Data
56c12414 JK	1	/* Standard language operator definitions for GDB, the GNU debugger.
56c12414 JK	2
0b302171 JB	3	Copyright (C) 1986, 1989, 1992, 1994, 2000, 2003, 2005, 2007-2012
0b302171 JB	4	Free Software Foundation, Inc.
56c12414 JK	5
	6	This file is part of GDB.
	7
	8	This program is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 3 of the License, or
	11	(at your option) any later version.
	12
	13	This program is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with this program. If not, see <http://www.gnu.org/licenses/>. */
	20
	21	/* Used when it's necessary to pass an opcode which will be ignored,
	22	or to catch uninitialized values. */
	23	OP (OP_NULL)
	24
	25	/* BINOP_... operate on two values computed by following subexpressions,
	26	replacing them by one result value. They take no immediate arguments. */
	27
	28	OP (BINOP_ADD) /* + */
	29	OP (BINOP_SUB) /* - */
	30	OP (BINOP_MUL) /* * */
	31	OP (BINOP_DIV) /* / */
	32	OP (BINOP_REM) /* % */
	33	OP (BINOP_MOD) /* mod (Knuth 1.2.4) */
	34	OP (BINOP_LSH) /* << */
	35	OP (BINOP_RSH) /* >> */
	36	OP (BINOP_LOGICAL_AND) /* && */
	37	OP (BINOP_LOGICAL_OR) /* \|\| */
	38	OP (BINOP_BITWISE_AND) /* & */
	39	OP (BINOP_BITWISE_IOR) /* \| */
	40	OP (BINOP_BITWISE_XOR) /* ^ */
	41	OP (BINOP_EQUAL) /* == */
	42	OP (BINOP_NOTEQUAL) /* != */
	43	OP (BINOP_LESS) /* < */
	44	OP (BINOP_GTR) /* > */
	45	OP (BINOP_LEQ) /* <= */
	46	OP (BINOP_GEQ) /* >= */
	47	OP (BINOP_REPEAT) /* @ */
	48	OP (BINOP_ASSIGN) /* = */
	49	OP (BINOP_COMMA) /* , */
	50	OP (BINOP_SUBSCRIPT) /* x[y] */
	51	OP (BINOP_EXP) /* Exponentiation */
	52
	53	/* C++. */
	54
	55	OP (BINOP_MIN) /* <? */
	56	OP (BINOP_MAX) /* >? */
	57
	58	/* STRUCTOP_MEMBER is used for pointer-to-member constructs.
	59	X . * Y translates into X STRUCTOP_MEMBER Y. */
	60	OP (STRUCTOP_MEMBER)
	61
	62	/* STRUCTOP_MPTR is used for pointer-to-member constructs
	63	when X is a pointer instead of an aggregate. */
	64	OP (STRUCTOP_MPTR)
	65
	66	/* TYPE_INSTANCE is used when the user specifies a specific
	67	type instantiation for overloaded methods/functions.
	68
69	The format is:
70	TYPE_INSTANCE num_types type0 ... typeN num_types TYPE_INSTANCE. */
71	OP (TYPE_INSTANCE)
72
73	/* end of C++. */
74
75	/* For Modula-2 integer division DIV. */
76	OP (BINOP_INTDIV)
77
78	/* +=, -=, *=, and so on. The following exp_element is another opcode,
79	a BINOP_, saying how to modify. Then comes another BINOP_ASSIGN_MODIFY,
80	making three exp_elements in total. */
81	OP (BINOP_ASSIGN_MODIFY)
82
83	/* Modula-2 standard (binary) procedures. */
84	OP (BINOP_VAL)
85
86	/* Concatenate two operands, such as character strings or bitstrings.
87	If the first operand is a integer expression, then it means concatenate
88	the second operand with itself that many times. */
89	OP (BINOP_CONCAT)
90
91	/* For (the deleted) Chill and Pascal. */
92	OP (BINOP_IN) /* Returns 1 iff ARG1 IN ARG2. */
93
94	/* This is the "colon operator" used various places in (the
95	deleted) Chill. */
96	OP (BINOP_RANGE)
97
98	/* This must be the highest BINOP_ value, for expprint.c. */
99	OP (BINOP_END)
100
101	/* Operates on three values computed by following subexpressions. */
102	OP (TERNOP_COND) /* ?: */
103
104	/* A sub-string/sub-array. (the deleted) Chill syntax:
105	OP1(OP2:OP3). Return elements OP2 through OP3 of OP1. */
106	OP (TERNOP_SLICE)
107
56c12414 JK	108	/* Multidimensional subscript operator, such as Modula-2 x[a,b,...].
	109	The dimensionality is encoded in the operator, like the number of
	110	function arguments in OP_FUNCALL, I.E. <OP><dimension><OP>.
	111	The value of the first following subexpression is subscripted
	112	by each of the next following subexpressions, one per dimension. */
	113	OP (MULTI_SUBSCRIPT)
	114
	115	/* The OP_... series take immediate following arguments.
	116	After the arguments come another OP_... (the same one)
	117	so that the grouping can be recognized from the end. */
	118
	119	/* OP_LONG is followed by a type pointer in the next exp_element
	120	and the long constant value in the following exp_element.
	121	Then comes another OP_LONG.
	122	Thus, the operation occupies four exp_elements. */
	123	OP (OP_LONG)
	124
	125	/* OP_DOUBLE is similar but takes a DOUBLEST constant instead of a
	126	long. */
	127	OP (OP_DOUBLE)
	128
	129	/* OP_VAR_VALUE takes one struct block * in the following element,
	130	and one struct symbol * in the following exp_element, followed
	131	by another OP_VAR_VALUE, making four exp_elements. If the
	132	block is non-NULL, evaluate the symbol relative to the
	133	innermost frame executing in that block; if the block is NULL
	134	use the selected frame. */
	135	OP (OP_VAR_VALUE)
	136
36b11add JK	137	/* OP_VAR_ENTRY_VALUE takes one struct symbol * in the following element,
	138	followed by another OP_VAR_ENTRY_VALUE, making three exp_elements.
	139	somename@entry may mean parameter value as present at the entry of the
	140	current function. Implemented via DW_OP_GNU_entry_value. */
	141	OP (OP_VAR_ENTRY_VALUE)
	142
56c12414 JK	143	/* OP_LAST is followed by an integer in the next exp_element.
	144	The integer is zero for the last value printed,
	145	or it is the absolute number of a history element.
	146	With another OP_LAST at the end, this makes three exp_elements. */
	147	OP (OP_LAST)
	148
	149	/* OP_REGISTER is followed by a string in the next exp_element.
	150	This is the name of a register to fetch. */
	151	OP (OP_REGISTER)
	152
	153	/* OP_INTERNALVAR is followed by an internalvar ptr in the next
	154	exp_element. With another OP_INTERNALVAR at the end, this
	155	makes three exp_elements. */
	156	OP (OP_INTERNALVAR)
	157
	158	/* OP_FUNCALL is followed by an integer in the next exp_element.
	159	The integer is the number of args to the function call.
	160	That many plus one values from following subexpressions
	161	are used, the first one being the function.
	162	The integer is followed by a repeat of OP_FUNCALL,
	163	making three exp_elements. */
	164	OP (OP_FUNCALL)
	165
	166	/* OP_OBJC_MSGCALL is followed by a string in the next exp_element
	167	and then an integer. The string is the selector string. The
	168	integer is the number of arguments to the message call. That
	169	many plus one values are used, the first one being the object
	170	pointer. This is an Objective C message. */
	171	OP (OP_OBJC_MSGCALL)
	172
	173	/* This is EXACTLY like OP_FUNCALL but is semantically different.
	174	In F77, array subscript expressions, substring expressions and
	175	function calls are all exactly the same syntactically. They
	176	may only be disambiguated at runtime. Thus this operator,
	177	which indicates that we have found something of the form
	178	<name> ( <stuff> ). */
	179	OP (OP_F77_UNDETERMINED_ARGLIST)
	180
	181	/* OP_COMPLEX takes a type in the following element, followed by another
	182	OP_COMPLEX, making three exp_elements. It is followed by two double
	183	args, and converts them into a complex number of the given type. */
	184	OP (OP_COMPLEX)
	185
	186	/* OP_STRING represents a string constant.
	187	Its format is the same as that of a STRUCTOP, but the string
	188	data is just made into a string constant when the operation
	189	is executed. */
	190	OP (OP_STRING)
	191
56c12414 JK	192	/* OP_ARRAY creates an array constant out of the following subexpressions.
	193	It is followed by two exp_elements, the first containing an integer
	194	that is the lower bound of the array and the second containing another
	195	integer that is the upper bound of the array. The second integer is
	196	followed by a repeat of OP_ARRAY, making four exp_elements total.
	197	The bounds are used to compute the number of following subexpressions
	198	to consume, as well as setting the bounds in the created array constant.
	199	The type of the elements is taken from the type of the first subexp,
	200	and they must all match. */
	201	OP (OP_ARRAY)
	202
	203	/* UNOP_CAST is followed by a type pointer in the next exp_element.
	204	With another UNOP_CAST at the end, this makes three exp_elements.
	205	It casts the value of the following subexpression. */
	206	OP (UNOP_CAST)
	207
9eaf6705 TT	208	/* Like UNOP_CAST, but the type is a subexpression. */
	209	OP (UNOP_CAST_TYPE)
	210
56c12414 JK	211	/* The C++ dynamic_cast operator. */
	212	OP (UNOP_DYNAMIC_CAST)
	213
	214	/* The C++ reinterpret_cast operator. */
	215	OP (UNOP_REINTERPRET_CAST)
	216
	217	/* UNOP_MEMVAL is followed by a type pointer in the next exp_element
	218	With another UNOP_MEMVAL at the end, this makes three exp_elements.
	219	It casts the contents of the word addressed by the value of the
	220	following subexpression. */
	221	OP (UNOP_MEMVAL)
	222
	223	/* UNOP_MEMVAL_TLS is followed by a `struct objfile' pointer in the next
	224	exp_element and a type pointer in the following exp_element.
	225	With another UNOP_MEMVAL_TLS at the end, this makes four exp_elements.
	226	It casts the contents of the word offsetted by the value of the
	227	following subexpression from the TLS specified by `struct objfile'. */
	228	OP (UNOP_MEMVAL_TLS)
	229
9eaf6705 TT	230	/* Like UNOP_MEMVAL, but the type is supplied as a subexpression. */
	231	OP (UNOP_MEMVAL_TYPE)
	232
56c12414 JK	233	/* UNOP_... operate on one value from a following subexpression
	234	and replace it with a result. They take no immediate arguments. */
	235
	236	OP (UNOP_NEG) /* Unary - */
	237	OP (UNOP_LOGICAL_NOT) /* Unary ! */
	238	OP (UNOP_COMPLEMENT) /* Unary ~ */
	239	OP (UNOP_IND) /* Unary * */
	240	OP (UNOP_ADDR) /* Unary & */
	241	OP (UNOP_PREINCREMENT) /* ++ before an expression */
	242	OP (UNOP_POSTINCREMENT) /* ++ after an expression */
	243	OP (UNOP_PREDECREMENT) /* -- before an expression */
	244	OP (UNOP_POSTDECREMENT) /* -- after an expression */
	245	OP (UNOP_SIZEOF) /* Unary sizeof (followed by expression) */
	246
	247	OP (UNOP_PLUS) /* Unary plus */
	248
	249	OP (UNOP_CAP) /* Modula-2 standard (unary) procedures */
	250	OP (UNOP_CHR)
	251	OP (UNOP_ORD)
	252	OP (UNOP_ABS)
	253	OP (UNOP_FLOAT)
	254	OP (UNOP_HIGH)
	255	OP (UNOP_MAX)
	256	OP (UNOP_MIN)
	257	OP (UNOP_ODD)
	258	OP (UNOP_TRUNC)
	259
	260	OP (OP_BOOL) /* Modula-2 builtin BOOLEAN type */
	261	OP (OP_M2_STRING) /* Modula-2 string constants */
	262
	263	/* STRUCTOP_... operate on a value from a following subexpression
	264	by extracting a structure component specified by a string
	265	that appears in the following exp_elements (as many as needed).
	266	STRUCTOP_STRUCT is used for "." and STRUCTOP_PTR for "->".
	267	They differ only in the error message given in case the value is
	268	not suitable or the structure component specified is not found.
	269
	270	The length of the string follows the opcode, followed by
	271	BYTES_TO_EXP_ELEM(length) elements containing the data of the
	272	string, followed by the length again and the opcode again. */
	273
	274	OP (STRUCTOP_STRUCT)
	275	OP (STRUCTOP_PTR)
	276
	277	/* C++: OP_THIS is just a placeholder for the class instance variable.
	278	It just comes in a tight (OP_THIS, OP_THIS) pair. */
	279	OP (OP_THIS)
	280
56c12414 JK	281	/* Objective C: "@selector" pseudo-operator. */
	282	OP (OP_OBJC_SELECTOR)
	283
	284	/* OP_SCOPE surrounds a type name and a field name. The type
	285	name is encoded as one element, but the field name stays as
	286	a string, which, of course, is variable length. */
	287	OP (OP_SCOPE)
	288
56c12414 JK	289	/* OP_TYPE is for parsing types, and used with the "ptype" command
	290	so we can look up types that are qualified by scope, either with
	291	the GDB "::" operator, or the Modula-2 '.' operator. */
	292	OP (OP_TYPE)
	293
	294	/* An un-looked-up identifier. */
	295	OP (OP_NAME)
	296
	297	/* An Objective C Foundation Class NSString constant. */
	298	OP (OP_OBJC_NSSTRING)
	299
	300	/* A F90 array range operator (for "exp:exp", "exp:", ":exp" and ":"). */
	301	OP (OP_F90_RANGE)
	302
	303	/* OP_DECFLOAT is followed by a type pointer in the next exp_element
	304	and a dec long constant value in the following exp_element.
	305	Then comes another OP_DECFLOAT. */
	306	OP (OP_DECFLOAT)
	307
	308	/* OP_ADL_FUNC specifies that the function is to be looked up in an
	309	Argument Dependent manner (Koenig lookup). */
	310	OP (OP_ADL_FUNC)
608b4967 TT	311
	312	/* The typeof operator. This has one expression argument, which is
	313	evaluated solely for its type. */
	314	OP (OP_TYPEOF)
	315
	316	/* The decltype operator. This has one expression argument, which is
	317	evaluated solely for its type. This is similar to typeof, but has
	318	slight different semantics. */
	319	OP (OP_DECLTYPE)